(D) The molar mass of $H_2SO_4 = 98 \, g/mol$.The given mass of $H_2SO_4 = 392 \, mg = 392 \times 10^{-3} \, g = 0.392 \, g$.The number of moles of $H

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(D) The molar mass of $H_2SO_4 = 98 \, g/mol$.The given mass of $H_2SO_4 = 392 \, mg = 392 \times 10^{-3} \, g = 0.392 \, g$.The number of moles of $H_2SO_4 = \frac{0.392 \, g}{98 \, g/mol} = 0.004 \, mol = 4 \times 10^{-3} \, mol$.The total number of molecules initially present $= 4 \times 10^{-3} \times 6.022 \times 10^{23} = 2.4088 \times 10^{21}$ molecules.Since $2.4088 \times 10^{21}$ molecules are removed,the remaining molecules $= 2.4088 \times 10^{21} - 2.4088 \times 10^{21} = 0$.

Class 11 Chemistry Some Basic Concepts of Chemistry Mix Examples of Some Basic Concept of Chemistry

Medium

If $2.4088 \times 10^{21}$ molecules are removed from $392 \, mg$ of $H_2SO_4$ in a container,the number of $H_2SO_4$ molecules remaining in the container will be ........

A
$3.011 \times 10^{23}$
B
$1.2014 \times 10^{26}$
C
$0.6022 \times 10^{21}$
D
$0$

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Class 11 Questions

Class 11

Chemistry Questions

Chapter

Some Basic Concepts of Chemistry

Subtopic

Mix Examples of Some Basic Concept of Chemistry

Match the following columns:

Column - $A$ Column - $B$

$(A)$ $88 \ g$ of $CO_2$ $(1)$ $0.2 \ mol$

$(B)$ $6.022 \times 10^{23}$ molecules of water $(2)$ $2 \ mol$

$(C)$ $5.6 \ L$ of $O_2$ at $STP$ $(3)$ $1 \ mol$

$(D)$ $96 \ g$ of $O_2$ $(4)$ $6.022 \times 10^{23}$ molecules

$(E)$ One mole of any gas at $STP$ $(5)$ $3 \ mol$

Medium

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When $100 \, mL$ of $1 \, M$ $NaOH$ and $10 \, mL$ of $10 \, N$ $H_2SO_4$ solutions are mixed,what will be the nature of the resulting solution?

Medium

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Calculate the molarity of each of the following solutions: $(a)$ $30 \, g$ of $Co(NO_3)_2 \cdot 6H_2O$ in $4.3 \, L$ of solution $(b)$ $30 \, mL$ of $0.5 \, M \, H_2SO_4$ diluted to $500 \, mL$.

Difficult

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How many moles of aluminum oxide $(Al_2O_3)$ are produced when $1 \text{ mole}$ of potassium chlorate $(KClO_3)$ undergoes thermal decomposition,and the resulting gaseous product is reacted with excess aluminum?

Difficult

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The density of an equimolar mixture of $CH_4$ and $CO$ at $STP$ is ............... $g \, L^{-1}$.

Medium

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Column - $A$	Column - $B$
$(A)$ $88 \ g$ of $CO_2$	$(1)$ $0.2 \ mol$
$(B)$ $6.022 \times 10^{23}$ molecules of water	$(2)$ $2 \ mol$
$(C)$ $5.6 \ L$ of $O_2$ at $STP$	$(3)$ $1 \ mol$
$(D)$ $96 \ g$ of $O_2$	$(4)$ $6.022 \times 10^{23}$ molecules
$(E)$ One mole of any gas at $STP$	$(5)$ $3 \ mol$

If $2.4088 \times 10^{21}$ molecules are removed from $392 \, mg$ of $H_2SO_4$ in a container,the number of $H_2SO_4$ molecules remaining in the container will be ........

Similar Questions

When $100 \, mL$ of $1 \, M$ $NaOH$ and $10 \, mL$ of $10 \, N$ $H_2SO_4$ solutions are mixed,what will be the nature of the resulting solution?

Calculate the molarity of each of the following solutions: $(a)$ $30 \, g$ of $Co(NO_3)_2 \cdot 6H_2O$ in $4.3 \, L$ of solution $(b)$ $30 \, mL$ of $0.5 \, M \, H_2SO_4$ diluted to $500 \, mL$.

How many moles of aluminum oxide $(Al_2O_3)$ are produced when $1 \text{ mole}$ of potassium chlorate $(KClO_3)$ undergoes thermal decomposition,and the resulting gaseous product is reacted with excess aluminum?

The density of an equimolar mixture of $CH_4$ and $CO$ at $STP$ is ............... $g \, L^{-1}$.

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